const SYSTEM_INFO = uni.getSystemInfoSync();
export const getStatusBarHeight = ()=> SYSTEM_INFO.statusBarHeight || 15 ;
export const getTitleBarHeight = ()=>{
	if(uni.getMenuButtonBoundingClientRect){
		const {top,height} = uni.getMenuButtonBoundingClientRect();
		return height + (top - getStatusBarHeight())*2;
	}else return 50;
}
export const getNavBarHeight = ()=> getStatusBarHeight() + getTitleBarHeight();